I don't see how the Gas Stations on Reservation Land are any different than a gas station off reservation land. They both collect taxes, paid by the customer, and remit it to the state. I see no unfair competitive advantage... So, what are you REALLY mad about?
The fact that the tribes in Idaho are fighting to not have to pay their distributor the tax that is ultimately passed to the consumer. They wan't to establish their own tribal tax on the fuel and charge that. So, in effect, if they don't have to pay the state tax via the pass through, then the consumers don't pay the Idaho tax and the state still has to maintain the roads. The tribes benefit twice as they get the roads maintained by the state and they keep the tribal tax they collect.
All I want is for them to either A.) Collect the state tax from their customers and remit it to the state for use on the roads in the state or B.) Not collect it but be fully liable for the repair of all roads on their reservation. Either is okay for me.
However, if they wind up not having to pay the tax via the distributor, then the fuel won't be considered Idaho tax-paid, and that will severely impact interstate truck (over 26,000 lbs) traffic as the truckers won't be able to claim the fuel as tax-paid for International Fuel Tax Agreement purposes (that's another can of worms).